/*
 * Copyright 2004 original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jbfilter.impl;

import java.util.Date;

import org.apache.commons.lang.time.DateUtils;
import org.jbfilter.core.TruncateUnit;
import org.jbfilter.core.fcomps.single.DateFilterComponent;

class _DateFilterComponentBeanSupport<E, C extends DateFilterComponent<E>>
	extends
		_CompareFilterComponentBeanSupport<E, Date, C> {

	_DateFilterComponentBeanSupport(C filterComponent) {
		super(filterComponent);
	}

	@Override
	protected int calculateCompareValue(Date valueToTest, Date value) {
		DateFilterComponent<E> fc = getFilterComponent();
		long diff;
		TruncateUnit truncate = fc.getTruncate();
		if (truncate != null) {
			int calConst = truncate.getCalConst();
			diff = DateUtils.truncate(valueToTest, calConst).getTime() - DateUtils.truncate(value, calConst).getTime();
		} else {
			diff = valueToTest.getTime() - value.getTime();
		}
		if (diff == 0) {
			return 0;
		} else if (diff > 0){
			return 1;
		} else {
			return -1;
		}
	}
	
}
